Upper-roughing machine



Filed May 29, 1929 wuentoz ,MW U. M @Hoff/man Patented Jan. 16, 1934 TED STATES tenaz PATENT UPPER-ROUGHING MACHINE Application May 29, 1929. Serial No. 366,828

2 Claims.

This invention relates to machinery for manufacturing footwear, and, more particularly, to mechanism for preparing a lasted shoe upper prior to the aixation of an outer sole thereto by means of adhesive cement.

A general object of the invention is to provide a mechanism by which the lasting allowance of the lasted upper may be uniformly roughed so that the leather or other material l0 of which the lasting allowance is composed will readily accept the adhesive cement and will form a rm union with the outer sole when ailixed thereto.

A more specinc object of the invention is to provide a roughing machine which will rapidly,

uniformly and efficiently rough the lasting allowance of shoe uppers of varied materials, which will be simple and economical of construction, and which' will operate with freedom from wear and mechanical diiiculties.

Other objects of the invention will in part be obvious and will in part appear hereinafter.

The invention accordingly comprises the features of construction, combination of elements and arrangement of parts which will be exemplied in the construction hereinafter set forth, and the scope of the application of which will be indicated in the claims.

For a fuller understanding of the nature and objects of the invention reference should be had to the following detailed description taken in connection with the accompanying drawing, in which:

Figure 1 is a front elevational view of one embodiment of the invention, shown partially broken away;

Fig. 2 is an end elevation of Fig. 1;

Fig. 3 is a composite side elevation and diametrical sectional view of the form of roughing element shown in Figs. 1 and 2; and

Fig. 4 is a view similar to Fig. 3, showing another form of roughing element.

In the manufacture of footwear, leathers and fabrics having widely differing characteristics are used, and when the outer soles are to be aiiixed thereto by an adhesive cement it is necessary that the lasting allowance of the lasted upper be prepared to receive the adhesive cement and to form a rm union or bond with the outer sole when aixed thereto. In accordance with the principles of the present invention it has been found that such treatment may be uniformly and effectively accomplished by means of a rotating roughing element, against the operating edge of which the lasting allowance of the lasted upper is held.

Referring more particularly to the drawing, it will be seen from Fig. l that the rotating roughing elements may be conveniently mounted upon a horizontal spindle of the bench type, such as is ordinarily used on bench-mounted emery wheels and the like. More speciiically, the device may comprise a base l0 adapted to be secured to a suitable support, such as a bench 11, a sub-base 12 having bearings 13 in which is mounted a rotatable spindle 14. The spindle 14 may be'poWer-driven in any suitable manner, such as, for example, a belt-pulley 15, in which case it is preferably also provided with an idlerpulley 16 and a beltguide 17 which is shiftable axially with respect to the spindle 14 on a suitably-supported rod 18 by means of a handle 19.

Mounted upon the spindle 14 is a roughing element 20, which will be more' particularly de- 75v scribed hereinafter and which is preferably enclosed within the housing 21 connected to a suction-pipe 22 and has a removable front plate 23 provided with an opening 24 through which only a portion of the periphery of the roughing element is exposed.

Generally considered, the roughing element 20 comprises a plurality of pivotally secured individual roughing elements, which, during the rotation of the spindle 14, are centrifugally impelled outwardly in a radial direction so that their operative ends are dragged across the lasting allowance of the lasted shoe upper as it is held against the opening 24.

In Fig. 3 the roughing element 20 iscomposed 90 of a block 25, to which circumierentially-disposed holding elements 26 are pivotally secured as at 27. The holding elements 26 are generally cupshaped in form as at 28 and have a plurality of wire bristles 29 secured therein. To prevent un- 95 due spreading of the bristles 29, and too much lateral movement of the cup-members 28, laterally-disposed plates 30 are suitably secured to the block 25 and extend outwardly in a radial direction to a point within about a half inch of the outer ends of the bristles 29. It will also be found to be desirable to surround the neck portion of each of the elements 26 with a washer of felt or the like 32.

In the form of device shown in Fig. 4 the block 105 25 is provided with a series of annularly-disposed transverse holes 27', and the bristles 29 are looped therethrough and secured in tufted relation with respect to each other intermediate their ends by tie Wires or the like 31. This form of 1.10

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device is likewise equipped with plates 30 which have the same function as in the form shown in Fig. 3.

Although in the drawing and in the above description the rotating spindle 14 has been shown and described as a belt-driven spindle aflixed with respect to a supporting element, it is to be understood that without departing from the spirit of the invention the spindle may be otherwise driven and need not be aiiixed, in which latter case the rotating roughing element may be utilized as a hand tool. It is preferred, however, that the spindle be fixed in order that the lasting allowance of the lasted upper may be held thereagainst in the manner indicated.

It will thus be seen that by means of the present invention there has been provided a device which will rapidly and eiiiciently perform the desired roughing operations on the lasting allowance of the lasted upper in the manner described above, and since certain changes may be made in the above construction, and dierent embodiments of the invention could be made, without departing from the scope thereof, it is intended that all matter contained in the above description or shown in accompanying drawing shall be interpreted as illustrative and not in a limiting sense.

It is also to be understood that the following claims are intended to cover all of the generic and specic features of the invention herein described and all statements of the scope of the invention which as a matter of language might be said to fall therebetween.

Having described my invention, what I claim as new and desire to secure by Letters Patent is:

1. A roughing machine for lasted shoe uppers, comprising a rotatable roughing element, and means for rotating said element; said element comprising a circular block, a plurality of pivotallydisposed cup elements circumferentially mounted thereon in limp relationship therewith; each or said cup elements carrying a plurality of wire bristles, the free ends of which are adapted to be impelled outwardly in a radial direction as the block is rotated, and cushioned supporting means between said cup elements and said circular block.

2. A roughing machine for lasted shoe uppers, comprising a rotatable roughing element, and means for rotating said element; said element comprising a circular block, a plurality of pivotally-disposed cup elements circumferentially mounted thereon; each of said cup elements carrying a plurality of wire bristles, the free ends of which are adapted to be impelled outwardly in a radial direction as the block is rotated; cushion means between said cup elements and said circular block; and a pair of circular plates disposed on each side of said circular block and extending outwardly adjacent and beyond said cup elements and terminating short of the outer ends of the wire bristles.

WILLIAM C. CARD, JR. 

